Hi Tomasz,
The MCUBoot Swap using Move is preferable to the Swap using Scratch. The only limitation: "The algorithm is limited to support sectors of the same sector layout. All slot's sectors should be of the same size."
Best regards, Andrej Butok
From: Tomasz Jastrzębski via TF-M tf-m@lists.trustedfirmware.org Sent: Friday, April 5, 2024 4:56 PM To: tf-m@lists.trustedfirmware.org Subject: [TF-M] MCUBOOT_SWAP_USING_MOVE vs MCUBOOT_SWAP_USING_SCRATCH
Hi All,
I apologize for this probably trivial question, but I cannot find out if and why I should use MCUBOOT_SWAP_USING_MOVE or MCUBOOT_SWAP_USING_SCRATCH. Are there any real advantages of move with SCRATCH other than that it requires less flash? - that is, min just one extra sector for all the images vs min one sector per image? Move without scratch seems to provide a better wear balance but still almost all the examples I come across use move with scratch. What am I missing?
Kind regards, Tomasz